• 
  Harry Carey Jr.

  Jay C
• 
  Karen Steele

  Dr. Sharon Mason
• 
  James Kline

  Tall Station Attendant
• 
  Dale Van Sickel

  Tracer #1
• 
  Michael Rennie (I)

  Garth A7
• 
  Chubby Johnson

  Uncle Pete
• 
  Ruth Foster (I)

  Citizen in Crowd
• 
  William Travis

• 
  Eduard Franz

  Prof. Sigmund Marx
• 
  George Fisher

  Short Station Attendant
• 
  Wendell Corey

  Şerif
• 
  Warren Stevens

  Dr. Carl Zellar

• 
  Alan Stensvold

  imagine
• 
  Frank P. Keller

  montaj
• 
  Robert S. Eisen

  production manager